Glass-blowing machine.



F. W. STEWART. GLASS BLOWING MACHINE. APPLICATION FILED 0CT.27 19l5.

Patented Feb. 11, 1919.

2 SHEETS-SHEET l.

FlG,4

INVESQTQR I s r4 2? 1 k 65i? 0 F. W. STEWART.

GLASS BLOWING MACHINE. APPLICATION FILED OCT. 27. 1915.

Patented Feb/11,1919,

2 SHEETSSHEET 2 WETNESSEZS A INVENTQR J. W I

WWW v EUR. 31 21 STEWART,

GlLASEl-ELO'WI Application filed October 27, 193.5.

xvi/m 2'2? may concern.-

I .i. REDERICK Ti". STEW- li'niied f cal'es. and resin. have invenled a new in ill l blowing 2 V u i. clear, and exact de- .f ilill 'll relates co a lore especial ly l during p re vent forlUVfl'l.

'to a body of S cooling the mold that my dates in ne particular. rho accompanying drm-zings Figure nc elcvacion of in}; improved ina- 2 is a plan view of the mold table with the molds mounted i a section on lhe line 3-3 p 4 is a plan TiQW of the mechame c aw-pipe; rig.

s n of she spray- 1 is a pin view or the valve .me connections thererrom; 1 1g. "16W 0 h valve; and Fig.

con-

'I notion of the blow-pipe and she method of supplying air s 2 designates t which may he 1* convenience in 1; 1d said Threaded porn m evc unich has the arms '2' ,ecsino; 5on1. o r

.- carry the cylinders with and 1.0 communicate at the cyl ind c r S is the piston 11 screwed the sleeve 12. In the eeve 1'12 dierotary air-pipe to the lower end of the air- In the coupler 15 and in said coupler ucl; 3J3 resting-on the shoulder 17 in w. ihe cinch 16 has die polygc couniy oii Beaver and and itis to i BEAV IPEZIhl'S'YLVANIA.

EKG Tiff; E-LIEHE.

Specification of Letters Patent. I Patented Feb 311 1gjg Serial No. 58,218.

onal opening 13 to receive the correspondingly shaped upper end of the blow-pipe, so that the blow-pipe, when inserted therein, will have the mine rotary motion imparted in it. The pin 19 in the chuck 16 engages a vertical groove 20 in the inner wall of the coupler 15 which permits the slight vertical movement of the chuck 16 in said coupler the pitman 28 is connected with said rack-bar and to the wrist-pin 29 on the ec centric 30 mounted on the shaft 31 This shaft 31 is mounted in suitable bearings 32 carried bythe column 4. A worm-Wheel 33 on the shaft 3.1.is engaged by the worm 34' of the motor The piles 9 and 10 are connected up to the triple-valve 36. This triple-valve has the inlet-port 37, which is adapted to cominunicate with the ports 38 and 39 accordand comniiiiiicace vitlithe pipes 47 and 48 respectively, leading to the upper and lower ends of the spray-operating cylinders 49. These cylinders 49 are supported below the table 2 by the bars 50, which are threaded as at 51 and by adjusting the nuts 52, the

cylinders may be raised and lowered according to the height to which th spray-pipeis toloe elevated, as hereinafter set forth.

The piston-rod 53 has the connechon 55 carried thereby and connected to said contherefrom and engaging the 7 andby halves around. the lower end nection'is the flexible pipe oi. Projecting from one side of the joint 55 is the projection 56, which engages the guide-rod 57 extending down from the table 2.

Through the connection the flexible pipe 5e communicates with the nipple 5S screwed into said connection A valve 59 is connected to said nipple, as indicated in Fig. 5, said valve being of ordinary construction with the stem 60 projecting out trigger 61.

A nipple 62 is connected with the valve 59, and a collar 63 connects said nipple with the spray-pipe 64 provided with the perforations 65. A cap 66 is connected with the upper end of the spray-pipe 6e,- said cap, when the spray-pipe is lowered acting to form the bottom of the blow-mold 67.

A collar 68 on the rod 50 extending downwardly from the table 3 is in the path of the trigger 61, and when said trigger engages said collar, the valve is opened and the water admitted to the pipe for spraying the mold.

A flexible pipe 54: is connected up with a suitable supply-pipe 70.

The mold illustrated is an ordinary two-- part paste-mold adapted for blowing shades or globes, and is a double mold, in that two articles are blown at one time. The moldsections are hinged on the vertical pin 71 and the lugs 7 2 on the mold-sections arev connected up by the turn-buckles 73 with the yoke 7 at, connected to the piston-rod T5 of the cylinder 46. By the employment of the turnbuckles 73 the mold-halves may be quickly and easily adjusted so as to center the mold properly with reference to the blow-pipe, the use of same the tedious and slow method of adjusting the mold-sections heretofore employed is avoided.

When my improved machine is in operation, the glass is gathered on the blow-pipe 76 and the blow-pipe is inserted in the support 77, whereupon the operator moves the handle 4-1, which through the connections described admits air into the upper end of the cylinder 8, thereby lowering the coupler 15 onto the blow-pipe, so that the chuck 16 will engage the upper end of said pipe. At the same time, the air is also-delivered by the pipe 4:3 to the cylinder 46, to close the moldpipe, and furthermore by the sameoperation the air is delivered by the pipe 42 to the lower end of the cylinder 49 of the opposite open mold, which acts to raise the spraypipe within said mold to spray the same, all as clearly indicated in Fig. 1.

' Just as soon as the halves of the blow-mold have been closed around the lower end ofthe blow-pipe, the article is blown by air supplied by the pipe 24:. At the same time that the blowing operation is taking place, the motor 35 acts through the connections die of the blowoperating, same,

scribed to reciprocate the rack-bars 26, whereby an oscillatory movement imparted to the coupler 15, and consequently to the blow-pipe T6. llhen the blowing operation is finished, the operator throws back the handle l1, operated as above, and moves the described. 7 In this manner, the molds are operated alternately, one being sprayed while the other is closed for the blowing operation.

In case it is desired to stop the rotation of the blow-pipe, as ea instance where the glass in the mold is not expanding properly and is twistingaround in the mold, it is only necessary to move the handle 41 into position towithdraw the coupler 15, whereupon the ro-- tation of the blow-pipe ceases at once If the blow-pipe is allowed to continuewith the glass twisting around in the mold'great damage done to the paste-lining of the mold. The blowing operation can be interrupted at any stage of the blowing operation and the coupler withdrawn.

By projecting the spray-pipe up within the open mold all parts. of the mold are reached by the spray, and when said spraypipe is lowered the cap at the upper end thereof forms the bottom of the blow-mold.

The machine is very simple and requires no skill for its operation, the only movement required on the part of the operator being the operating of the handles of the valves, as all the other operations follow automatically.

What I claim is:

1. In glass blowing apparatus, the combination of a suitable support, a blow-mold,

an operating cylinder dor opening and closing sain a blow-pipe support, a vertically movable blow-pipe connection, a cylinder for pipe, a cylinder for operating same, fluid supply connections leading to the opposite ends of said cylinders, and a valve controlling the said ciinneotions, whereby in the operation of said valve the operation of said blow-pipe connection, the mold and the spray-pipe takes place simultaneously.

2; In glass-blowing apparatus, the combition of a suitable support, a pair of blowmolds mounted on said support, operating cylinders for opening and closing same, Vl tically movable spray-pipes, cylinders for a vertically movable sprayoperating same, and means operated simulta neously with the ope 'ution of the opening and elosing of one blow-mold for raising and lowering thev sp 'ay-pipe in the other blowmold.

In glass-blowing apparatus. the combination 0? a suitable support. a pa rtible blowmold carried thereby, a vert'ieally movable spray-pipe, means for 'aising and lowerimg said spray-pipe, and the upper end of said spray-pipe when lowered forming the bottom of said mold.

4. In ,g'lassdilowing appa 'atus. the eomhination of a suitable support, a partihle blowmold carried thereby, a vertically movable spra \'-pipe, and a eap at the upper end of said spra \'-pipe, means for 'aising and lowering said spray-pipe. said cap forming the bottom of said blow-mold when lowered.

In glass-blowing apparatus, the combination of a. suitable support, a partiblo blowmold earried thereb \',m vertically movable spra \'pipe. means for raising, and lowering said spray-pipe, a flexible supply-pipe leading to said spray-pipe, a valve between said spray-pipe and said supplv-pipm and n1 *ans for automatieally operating said valve.

In testimony whereol', l, the said l nnonnit"li \Y. S'rnwwn'r, have hereunto set my hand. 

